I was unaware it was illegal there: I haven't seen anything but machine translation of the original article, but TechDirt provides the detail that the normally open and sane Finns criminalized open Wi-Fi networks after a theft of money that had barely anything to do with open Wi-Fi and everything to do with normal insider embezzlement.
The Justice Ministry is working on a change in rules to allow open Wi-Fi networks without penalty, as there's been little enforcement, and it's just an ugly law.
Does that mean public Wi-Fi without a WEP or WPA key has been unavailable in Finland all this time?
Google’s Wi-Fi Sniffing Woes Continue WorldwideSharon Osbourne admits she’s a ‘big mouthed old bat’